body{color:#fff;
    font-family:"微软雅黑";
    font-size: 14px;
    background:url('images/login3.jpg') no-repeat center center fixed;
    /*background-color: #5cb85c;*/
    /*background: linear-gradient(to top right, #ce8483, #f7e1b5, #92B8B1);*/
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}
.wrap1{
    position:absolute;
    top:70px;
    right:0;
    bottom:0;
    left:0;
    margin:auto

}/*把整个屏幕真正撑开--而且能自己实现居中*/

.item{
    color:#0f0f0f;
}
.main_content{
    background:url('images/main_bg.png') repeat;
    margin-left:auto;
    margin-right:auto;
    text-align:left;
    float:none;
    border-radius:8px;
}
.form-group{
    position:relative;
}
.login_btn{
    display:block;
    background:#3872f6;
    color:#fff;
    font-size:15px;
    width:100%;
    line-height:50px;
    border-radius:3px;
    border:none;
}
.login_input{
    width:100%;
    border:1px solid #3872f6;
    border-radius:3px;
    line-height:40px;
    padding:2px 5px 2px 30px;
    background:none;
}
.icon_font{
    position:absolute;
    bottom:15px;
    left:10px;
    font-size:18px;
    color: #ffffff;
}
.glyphicon{
    top:12px;
}
.font16{
    font-size:16px;
}
.mg-t20{
    margin-top:20px;
}
@media (min-width:200px){.pd-xs-20{padding:20px;}}
@media (min-width:768px){.pd-sm-50{padding:50px;}}
#grad {
    background: -webkit-linear-gradient(#4990c1, #52a3d2, #6186a3); /* Safari 5.1 - 6.0 */
    background: -o-linear-gradient(#4990c1, #52a3d2, #6186a3); /* Opera 11.1 - 12.0 */
    background: -moz-linear-gradient(#4990c1, #52a3d2, #6186a3); /* Firefox 3.6 - 15 */
    background: linear-gradient(#4990c1, #52a3d2, #6186a3); /* 标准的语法 */
}